微機(jī)原理綜合實(shí)驗(yàn)報告(編輯修改稿)
2024-08-30 12:42 本頁面
【文章內(nèi)容簡介】 DX,AL MOV CX,BX LOOP $ MOV AL,02H MOV DX,219H OUT DX,AL MOV CX,BX LOOP $ MOV AL,06H MOV DX,219H OUT DX,AL MOV CX,BX LOOP $ MOV AL,04H MOV DX,219H OUT DX,AL MOV CX,BX LOOP $ MOV AL,0CH MOV DX,219H OUT DX,AL MOV CX,BX LOOP $ MOV AL,08H MOV DX,219H OUT DX,AL MOV CX,BX LOOP $ MOV AL,09H MOV DX,219H OUT DX,AL MOV CX,BX LOOP $ JMP BG CODE ENDSEND START初始化8255使PA口為輸入口，PB口為輸出口，通過判別PA口的數(shù)據(jù)來使步進(jìn)電機(jī)工作在不同的狀態(tài)。步進(jìn)電機(jī)的旋轉(zhuǎn)由OUT指令控制，實(shí)現(xiàn)步進(jìn)電機(jī)按照預(yù)定指令旋轉(zhuǎn)。十．綜合實(shí)驗(yàn)：十字路口交通燈實(shí)驗(yàn)：（1）正常情況下，紅燈、綠燈5~10秒定時變化（2）分別設(shè)置南北行人中斷按鈕和東西行人中斷按鈕，當(dāng)行人過馬路是綠燈亮并延時5秒（3）設(shè)置緊急開關(guān)，當(dāng)按下開關(guān)時所以路口的信號燈全為紅色：（1）紅燈和綠燈轉(zhuǎn)換之間設(shè)置黃燈，并且黃燈閃爍3次（2）緊急紅燈按下時發(fā)出警報聲P8255A EQU 218H 。8255連接端口定義P8255B EQU 219HP8255C EQU 21AHP8255K EQU 21BHTIM_CTL EQU 203H 。8253連接端口定義TIMER0 EQU 200HTIMER1 EQU 201HINT0 EQU 220H 。8259連接端口定義INT1 EQU 221HMDAC EQU 228H 。0832連接端口定義。39。39。39。39。39。39。39。39。39。39。39。39。39。39。39。39。39。39。39。39。39。39。39。STACK SEGMENT STACKSTA DB 50 DUP(?)TOP EQU LENGTH STASTACK ENDSCODE SEGMENTASSUME CS:CODE,SS:STACKSTART: CLI MOV AX,TOP MOV SP,AX PUSH DS MOV AX,0000H 。定義中斷向量IRQ0 MOV DS,AX MOV AX,OFFSET IRQ0 ADD AX,0000H MOV SI,20H MOV [SI],AX MOV AX,CS MOV SI,22H MOV [SI],AX。39。39。39。39。39。39。39。39。39。39。39。39。39。39。39。39。39。39。39。39。39。39。39。39。39。39。39。 MOV AX,0000H 。定義中斷向量IRQ1 MOV DS,AX MOV AX,OFFSET IRQ1 ADD AX,0000H MOV SI,24H MOV [SI],AX MOV AX,CS MOV SI,26H MOV [SI],AX。............................ MOV AX,0000H 。定義中斷向量IRQ2 MOV DS,AX MOV AX,OFFSET IRQ2 ADD AX,0000H MOV SI,28H MOV [SI],AX MOV AX,CS MOV SI,2AH MOV [SI],AX POP DS。............................ MOV DX,TIM_CTL 。計數(shù)器0工作在方式1構(gòu)成單穩(wěn)態(tài)觸發(fā)器 MOV AL,00100010B OUT DX,AL MOV DX,TIMER0 MOV AL,0F0H 。只寫低8位 OUT DX,AL MOV DX,TIM_CTL MOV AL,01110110B 。計數(shù)器1工作在方式3構(gòu)成方波發(fā)生器 OUT DX,AL MOV DX,TIMER1 MOV AL,0FFH 。寫低8位 OUT DX,AL MOV AL,0FFH 。寫高8位 OUT DX,AL。............................ MOV AL,13H 。初始化ICW1，沿觸發(fā)且需要ICW4 MOV DX,INT0 OUT DX,AL MOV CX,0FFFH LOOP $ MOV AL,8 。初始化ICW2，自定義8號中斷 MOV DX,INT1 OUT DX,AL MOV CX,0FFFH LOOP $ MOV AL,9 。初始化ICW3，自定義9號中斷 MOV DX,INT1 OUT DX,AL MOV CX,0FFFH LOOP $ MOV AL,10 。初始化ICW2，自定義10號中斷 MOV DX,INT1 OUT DX,AL MOV CX,0FFFH LOOP $ MOV DX,INT1 。設(shè)置命令字OCW1，只響應(yīng)IR0、IRIR2引腳中斷請求 MOV AL,0F8H OUT DX,AL MOV CX,0FFFH LOOP $ MOV DX,INT0 ；設(shè)置命令字OCW2，普通EOI命令 MOV AL,20H OUT DX,AL MOV CX,0FFFH LOOP $ STI。39。39。39。39。39。39。39。39。39。39。39。39。39。39。39。39。39。39。39。39。39。39。39。39。39。39。39。39。39。 MOV DX,P8255K 。8255初始化， B口輸出接LS240 MOV AL,10000001B OUT DX,AL。39。39。39。39。39。39。39。39。39。39。39。39。39。39。39。39。39。39。39。39。39。39。39。39。39。39。39。39。39。STATE1: MOV DX,P8255B 。東西紅，南北綠 MOV AL,01011010B OUT DX,AL MOV CX,10 。計時10秒S1: CALL DELAY LOOP S1STATE2: MOV DX,P8255B 。東西綠，南北黃 MOV AL,00000101B
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